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   1 #
   2 # This file is subject to the terms and conditions of the GNU General Public
   3 # License.  See the file "COPYING" in the main directory of this archive
   4 # for more details.
   5 #
   6 # Copyright (C) 2001 - 2005  Tensilica Inc.
   7 #
   8 # This file is included by the global makefile so that you can add your own
   9 # architecture-specific flags and dependencies. Remember to do have actions
  10 # for "archclean" and "archdep" for cleaning up and making dependencies for
  11 # this architecture
  12
  13 # Core configuration.
  14 # (Use VAR=<xtensa_config> to use another default compiler.)
  15
  16 variant-$(CONFIG_XTENSA_VARIANT_FSF)            := fsf
  17 variant-$(CONFIG_XTENSA_VARIANT_DC232B)         := dc232b
  18 variant-$(CONFIG_XTENSA_VARIANT_LINUX_CUSTOM)   := custom
  19
  20 VARIANT = $(variant-y)
  21 export VARIANT
  22
  23 # Platform configuration
  24
  25 platform-$(CONFIG_XTENSA_PLATFORM_XT2000)       := xt2000
  26 platform-$(CONFIG_XTENSA_PLATFORM_ISS)          := iss
  27
  28 PLATFORM = $(platform-y)
  29 export PLATFORM
  30
  31 # temporarily until string.h is fixed
  32 KBUILD_CFLAGS += -ffreestanding
  33
  34 KBUILD_CFLAGS += -pipe -mlongcalls
  35
  36 KBUILD_DEFCONFIG := iss_defconfig
  37
  38 # ramdisk/initrd support
  39 # You need a compressed ramdisk image, named ramdisk.gz in
  40 # arch/xtensa/boot/ramdisk
  41
  42 core-$(CONFIG_EMBEDDED_RAMDISK) += arch/xtensa/boot/ramdisk/
  43
  44 # Test for cross compiling
  45
  46 ifneq ($(VARIANT),)
  47   COMPILE_ARCH = $(shell uname -m)
  48
  49   ifneq ($(COMPILE_ARCH), xtensa)
  50     ifndef CROSS_COMPILE
  51       CROSS_COMPILE = xtensa_$(VARIANT)-
  52     endif
  53   endif
  54 endif
  55
  56 #
  57
  58 LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
  59
  60 head-y          := arch/xtensa/kernel/head.o
  61 core-y          += arch/xtensa/kernel/ arch/xtensa/mm/
  62 ifneq ($(PLATFORM),)
  63 core-y          += arch/xtensa/platforms/$(PLATFORM)/
  64 endif
  65 libs-y          += arch/xtensa/lib/ $(LIBGCC)
  66
  67 boot            := arch/xtensa/boot
  68
  69 archinc         := include/asm-xtensa
  70
  71 archprepare: $(archinc)/.platform
  72
  73 # Update processor variant and platform symlinks if something which affects
  74 # them changed.
  75
  76 $(archinc)/.platform: $(wildcard include/config/arch/*.h) include/config/auto.conf
  77         @echo '  SYMLINK $(archinc)/variant -> $(archinc)/variant-$(VARIANT)'
  78         $(Q)mkdir -p $(archinc)
  79         $(Q)ln -fsn $(srctree)/$(archinc)/variant-$(VARIANT) $(archinc)/variant
  80         @echo '  SYMLINK $(archinc)/platform -> $(archinc)/platform-$(PLATFORM)'
  81         $(Q)ln -fsn $(srctree)/$(archinc)/platform-$(PLATFORM) $(archinc)/platform
  82         @touch $@
  83
  84
  85 all: zImage
  86
  87 bzImage : zImage
  88
  89 zImage zImage.initrd: vmlinux
  90         $(Q)$(MAKE) $(build)=$(boot) $@
  91
  92 CLEAN_FILES     += arch/xtensa/vmlinux.lds                      \
  93                    $(archinc)/platform $(archinc)/variant       \
  94                    $(archinc)/.platform
  95
  96 define archhelp
  97   @echo '* zImage      - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
  98 endef
  99